It's used for various of clothes and trousers, PVC bag, canvas, footwear, , heavy fabric, etc. a) (60s/2), : used for shirts, blouses, lingerie, light weight fabrics b) (60s/3), (40s/3): used for tailoring, rain wear, shirt, blouse, sports wear, knitwear, quilts c) (40s/3): used for tailoring, trousers, jacket, medium, heavy fabric d) (20s/2), (20s/3): used for jeans, upholstery PVC bags, canvas, ...